| 内燃机的排气能量流特性 |
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| 引用本文： | 刘敬平,付建勤,冯康,王树青,赵智超.内燃机的排气能量流特性[J].中南大学学报(自然科学版),2011,42(11). |
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| 作者姓名： | 刘敬平 付建勤 冯康 王树青 赵智超 |
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| 作者单位： | 湖南大学先进动力总成技术研究中心,汽车车身先进设计制造国家重点实验室,湖南长沙,410082 |
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| 基金项目： | 国家重点基础研究发展规划("973"计划)项目，湖南省研究生科研创新基金资助项目，国家高技术研究发展计划("863"计划)项目，国家科技支撑计划项目 |
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| 摘 要： | 为高效回收利用内燃机排气能量,实现内燃机节能减排,采用试验和模拟仿真相结合的方法对1台乘用车汽油机的排气能量流特性进行研究.首先根据实验数据建立并标定计算模型,通过全工况模拟计算提取排气数据并进行分析,得出排气能量流随工况的变化关系.在此基础上将排气能量分解为余压能、余动能和余热能并得出其能量密度的三维分布图,结合排气压力波、速度和温度研究得出这3种形式能量的脉动特性.研究结果表明:高速高负荷时排气能量有更强的回收潜力；排气能量的主要表现形式是余热能,其次是余压能,余动能通常可以忽略；余压能和余动能的脉动性较大,余热能脉动性较小.研究结果为排气能量回收方式的选择提供了理论依据.
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| 关 键 词： | 内燃机 能量流 节能减排 GT-power 余能回收 |
Characteristics of engine exhaust gas energy flow |
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| LIU Jing-ping,FU Jian-qin,FENG Kang,WANG Shu-qing,ZHAO Zhi-chao.Characteristics of engine exhaust gas energy flow[J].Journal of Central South University:Science and Technology,2011,42(11). |
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| Authors: | LIU Jing-ping FU Jian-qin FENG Kang WANG Shu-qing ZHAO Zhi-chao |
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| Institution: | LIU Jing-ping,FU Jian-qin,FENG Kang,WANG Shu-qing,ZHAO Zhi-chao (State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Research Center for Advanced Powertrain Technologies,Hunan University,Changsha 410082,China) |
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| Abstract: | In order to recover engine exhaust gas energy efficiently and realize the goal of energy saving and emission reduction on engine,the characteristics of exhaust gas energy flow of a passenger car gasoline engine were studied by using a combined approach of experimental testing and computer simulation.Firstly,a simulation model was built and calibrated against experimental data.Then,the relationship between exhaust gas energy flow and engine operating conditions was established based on calculation results an... |
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| Keywords: | internal combustion engine energy flow energy saving and emission reduction GT-power energy recovery |
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